JPH04214547A - Reflection type screen and its manufacture - Google Patents

Abstract

PURPOSE:To improve contrast and to offer a reflection type screen capable of obtaining a wide angle of visual field and a method for manufacturing the screen. CONSTITUTION:A lens part is formed on one side of a base film by using ionizing radiation setting resin. A convex part is formed on the other side of the film, and a reflecting part is formed on the surface of the convex part. A light absorbing part is formed on the convex part, at least on a surface other than the reflecting part. Thus, the screen provided with the reflecting part in the form of a strip, the light absorbing part which absorbs outside light, and the lens part which guides light to those parts is manufactured.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a reflective screen for observing by reflecting image light from the front by a reflective part, and a method for manufacturing the same, in particular a reflective layer and a light absorbing layer are formed at the rear of the screen. This invention relates to a reflective screen equipped with a light-condensing lens at the front and a method for manufacturing the same.

0002

[Prior Art] In an image projection system that projects image light onto a screen for observation, there is a rear projection system of a transmission type.
Reflective forward projection systems are known. When comparing these systems, when the distance between the screen and the viewer is equal, the rear projection system requires more space for the projection system behind the screen than the front projection system. The entire system becomes larger accordingly. Furthermore, in recent years, compact forward projection systems using LCDs have been developed, so reflective screens are being reconsidered.

0003

[Problems to be Solved by the Invention] However, conventional reflective screens tend to reflect external light, and in particular, the contrast decreases due to the reflection of external light from diagonally above, making it difficult to observe images. was there.

Furthermore, in conventional reflective screens, when the image light is reflected by the reflective part, since the reflective surface is an isotropic diffusing surface, it is difficult to appropriately control the horizontal or vertical diffusion. There was also the problem that it was not possible to obtain a wide viewing angle.

[0005] The purpose of the present invention is to solve the above-mentioned problems,
To provide a reflective screen that makes it easy to observe images by improving contrast and provides a wide viewing angle by diffusing and reflecting image light in the horizontal and vertical directions, and to provide a method for manufacturing the same.

[0006]

[Means for Solving the Problems] In order to solve the above-mentioned problems, a reflective screen according to the present invention is a reflective screen in which image light projected from the front is reflected by a reflective part for observation, and in which the image light is reflected in a continuous band-like manner. Alternatively, it may be composed of a reflective section provided separately and a light absorbing section provided in a portion other than the reflective section for absorbing external light.

At this time, a lens portion may be provided in front of the reflecting portion and the light absorbing portion to allow the image light to enter the reflecting portion and to allow external light to enter the light absorbing portion. The reflecting section may include one or more convex mirrors and/or concave mirrors arranged to diffuse and reflect the image light.

[0008] The light absorbing portion may protrude more than the reflecting portion.

The reflective screen according to the present invention also includes:
a light-transmissive base film; a light-transmissive convex portion provided on one surface of the base film; a reflective portion provided on the top surface of the convex portion to reflect image light; a light absorbing part provided on at least a surface other than the reflecting part to absorb external light, and a light absorbing part provided on the other surface of the base film to allow image light to enter the reflecting part and absorb the external light. and a lens section that allows light to enter the lens section.

Furthermore, a first base film having a light transmittance, a plurality of convex bases provided in parallel at intervals on one side of the first base film, and a base film provided between the bases to reflect image light. a light absorbing part provided on the surface of the base to absorb external light; a second base film having light transmittance; and a light absorbing part provided on one surface of the second base film to absorb the image light. a lens section that allows light to enter the reflection section and external light to enter the light absorption section;
It may also be constructed from an adhesive section provided between the other surface of the base film and the reflective section and the light absorbing section to bond them together.

The method for manufacturing a reflective screen according to the present invention includes a lens part forming step of filling one surface of a base film transparent to ionizing radiation with an ionizing radiation curable resin and curing it to form a lens part; a convex part forming step of filling the other surface of the base film with an ionizing radiation-curable resin and curing it to form a convex part; a reflective part forming process of forming a reflective part on the surface of the convex part; The method is configured to include at least a light absorbing part forming step of forming a light absorbing part on a surface other than the reflecting part.

[0012] Also, a base forming step of filling one side of the first base film transparent to ionizing radiation with an ionizing radiation curable resin and curing it to form a plurality of parallel convex bases at intervals; a reflective part forming step of forming a reflective part on the surface of the base; a light absorbing part forming step of forming a light absorbing part on the surface of the base; and a light absorbing part forming step of forming a light absorbing part on the surface of the base; a lens part forming step of filling and curing resin to form a lens part; and filling and curing an ionizing radiation-curable resin between the other surface of the second base film and the reflective part and the light absorption part. The structure may also include an adhesion step of bonding these together by bonding them together.

[0013] Further, a step of forming a reflective layer base, in which one side of the first base which is transparent to ionizing radiation is filled with an ionizing radiation-curable resin and cured to form a plurality of convex reflective layer bases spaced apart in parallel; radiolucent second
a lens part forming step of filling one surface of the base film with an ionizing radiation curable resin and curing it to form a lens part; and filling the other surface of the second base film with an ionizing radiation curable resin and curing it. a light transmitting portion forming step of forming a plurality of parallel convex light transmitting portions at intervals; and a step of forming a light transmitting portion between the other surface of the first base film and the surface of the second base film having the light transmitting portion. It includes an adhesion step of filling and curing a light-absorbing ionizing radiation-curable resin to bond them together, and a reflective layer printing step of printing a reflective layer on the convex surface of the reflective layer base. It may be configured as follows.

[0014]

EXAMPLES The present invention will be described in detail below with reference to the drawings and the like. 1 to 5 are diagrams schematically showing a part of a first embodiment of a reflective screen according to the present invention, in which FIGS. 1, 4, and 5 are cross-sectional views, and FIG. 2 is a cross-sectional view. FIG. 3 is a plan view showing a reflective layer constituting the screen of the same embodiment.

In the reflective screen 1 of this embodiment, a plurality of horizontally continuous strip-shaped reflective layers 11 are formed in parallel at the rear. A protruding light absorption layer 12 is formed. Further, a plurality of lenticular lenses 13 are formed in the front part of the reflective screen 1 so that a plurality of lenticular lenses 13 have traveling lines (axes of the cylindrical lenses) parallel to each other in the horizontal direction.

The reflective layer 11 reflects the incident image light 2 while diffusing it in the horizontal direction. As shown in FIGS. 1 and 3, the reflective layer 11 of this example has a plurality of fine semi-cylindrical convex mirrors 11a formed so that the travel lines (cylindrical axes) are parallel to each other in the vertical direction. Examples of the material for the reflective layer 11 include metals such as aluminum, paints containing fine particles of these metals, and the like.

As shown in FIG. 1, FIG. 4, and FIG.
It is formed in a portion other than the reflective layer 11, and is made to protrude beyond the reflective layer 11. This is to make it easier to absorb the incident external light 3, as shown in FIG. For this reason, the light absorption layer 12
It is preferable that the height of the protrusion be as high as possible, the angle corresponding to the apex angle of the triangle to be approximately 45°, and the length of the portion corresponding to the base of the triangle to be as long as possible. The material of this light absorption layer 12 includes a light absorbing material,
For example, black ink may be used. Note that the shape of the light absorption layer is not limited to a triangular cross section, but may be other shapes such as a trapezoidal cross section.

The lenticular lens 13 is provided to condense the image light 2 and allow it to enter the reflective layer 11, and to ensure that the external light 3 enters the light absorption layer 12 (
Figure 1, Figure 4, Figure 5).

The lenticular lens 13 in this example is for vertical diffusion, and can diffuse the image light 2 reflected by the reflective layer 11 to expand the viewing angle in the vertical direction. In the vicinity of the center of the screen, the lenticular lens 13 aligns the optical axis of the projected image light 2 with the reflective layer 1.
1 (Fig. 1),
At the upper end of the screen, as shown in FIG. 4, since the incident angle of the image light 2 is different from the center of the screen, the optical axis and the center of the reflective layer 11 are formed to be shifted from each other. The bottom edge of the screen is offset from the top edge. Note that the focal point of the lenticular lens 13 is preferably located on the rear side of the reflective layer 11. The reason for this is that the reflective layer 11
This is to prevent the light reflected by the light absorbing layer 12 from being absorbed. The material of the lenticular lens 13 may be optically transparent glass, polymethyl methacrylate,
Synthetic resins such as polyvinyl chloride, polystyrene, polycarbonate, etc. can be used.

6 and 7 are diagrams schematically showing a part of a second embodiment of the reflective screen according to the present invention, with FIG. 6 being a perspective view and FIG. 7 being a sectional view. be.

The reflective screen 4 of this example uses a base film 4a as a base material. base film 4
A trapezoidal convex portion 43A is formed on the rear surface of a.
A reflective layer 41 is formed on the upper bottom surface of the convex portion 43A, and a light absorption layer 42 is formed on the slope. A lenticular lens 43B for vertical diffusion is formed on the front surface of the base film 4a.

The base film 4a is preferably one that is transparent to light, for example, ionizing radiation such as ultraviolet rays (UV) or electron beams (EB), and in this example, a PET film is used.

The reflective layer 41 is a semi-cylindrical recess formed at the upper base of the convex portion 43A, and is formed along the traveling line (axis of the cylinder).
are provided on the surface of the concave portion such that a plurality of concave portions are parallel to each other in the vertical direction. The material of the convex portion 43A is preferably one that is light-transmissive, such as urethane acrylate-based or epoxy-based ionizing radiation-curable resin.

The light absorption layer 42 has a convex portion 43A and a reflection layer 4.
It is formed so as to cover the entire back surface of 1. In this example, the area of the light absorption layer 42 is approximately 70% of the area of the entire screen.

The lenticular lens 43B is formed on the front surface of the base film 4a, and is made of ionizing radiation-curable resin.

Next, a method for manufacturing the reflective screen 4 constructed as described above will be explained. Figures 8 and 9 are
8 is a block diagram showing each step of the method of the embodiment, and FIG. 9 is a diagram showing a first embodiment of the method for manufacturing a reflective screen according to the present invention. FIG. 9 is a block diagram showing each step of the method of the embodiment. It is a schematic diagram showing an apparatus.

The method for manufacturing the reflective screen 4 of the second embodiment includes a lenticular lens forming step 101, a convex portion forming step 102, a reflective layer forming step 103, and a light absorption layer forming step 104. be.

The lenticular lens forming step 101 is as follows:
This is a step of molding a lenticular lens 43B using an ionizing radiation-curable resin on one surface of the base film 4a that is transparent to ionizing radiation.

In the protrusion forming step 102, the base film 4
This is a step of molding a trapezoidal convex portion 43A having a semi-cylindrical concave portion at its upper base using an ionizing radiation curable resin on the other surface of the a. The mold for the convex portion 43A may be obtained by cutting a reverse mold with a winding roll, then changing the mold by electroforming or resin molding, and winding the mold around the roll.

The reflective layer forming step 103 is a step of forming the reflective layer 41 on the surface of the concave portion of the convex portion 43A. The reflective layer 41 may be formed by printing ink containing a metal such as aluminum or by vapor depositing a metal.

The light absorption layer forming step 104 is a step of forming the light absorption layer 42 so as to cover the entire rear surface of the convex portion 43A and the reflective layer 41. If formed in this way, the light absorption layer 4
Since the reflective screen 2 can be easily formed, the reflective screen 4 can be manufactured in a short time. In order to form the light absorbing portion 42, printing or the like may be performed using a known method using black ink or the like.

Note that here, the lenticular lens 4
Although an example has been described in which the layer 3B is molded before the convex portion 43A, the reflective layer 41, and the light absorption layer 42, it may be molded last after these.

The method for manufacturing the reflective screen 4 constructed as described above will be explained in more detail with reference to FIG. 9 along with a manufacturing example. In this example, a case will be described in which a reflective screen with a screen size of 70 inches is manufactured.

[0034] The base film 4a has a thickness of 0.05 m.
m of PET film is inserted from the impression cylinder 82 side, and the UV curable resin 41b is supplied to the forming roll 81B on which the mold of the lenticular lens (pitch 0.2 mm) is formed.
UV rays are irradiated from the V lamp 83b, and the UV curable resin 41
b is cured to form a lenticular lens 43B (
Lenticular lens molding step 101). Note that 84 is a light shielding roll for blocking unnecessary UV rays.

This base film 4a is passed through a molding roll 81A in which a mold of convex portions 43A (semi-cylindrical concave portions pitch 0.2 mm) is formed, a UV curable resin 41a is supplied, and the UV curable resin 41a is UV cured by a UV lamp 83a. The shaped resin 41a is cured to form the convex portion 43A (convex portion forming step 102).

After the mold is released by the mold release roll 85, an ink containing aluminum is offset-printed into the semi-cylindrical recessed part of the convex part 43A by the printing roll 86, thereby forming the reflective layer 4.
1 (reflection layer forming step 103).

Finally, the printing roll 87 prints the convex portion 43A.
The light absorbing layer 42 is formed by screen printing black ink so as to cover the entire back surface of the reflective layer 41 (light absorbing layer forming step 104).

FIG. 10 is a sectional view showing a portion of a third embodiment of the reflective screen according to the present invention. In this embodiment, two base films 5a and 5b that are transparent to ionizing radiation are used.

The base film 5a is placed at the rear of the reflective screen 5.
A plurality of horizontally continuous bases 51A each having a triangular cross section and made of ionizing radiation curable resin are formed in parallel at intervals on the front surface of the base. This base 51A is provided as a guide when forming the reflective layer 52 and the light absorption layer 53.

A reflective layer 52 is formed on the entire surface of the base 51A and the base film 5a, and a light absorbing layer 53 is formed on the surface of the reflective layer 52 and on the slope of the base 51A. There is. Note that the reflective layer 52 in this example
(The part between the bases 51A) is made into a flat surface, but it may be made into a semi-cylindrical convex mirror like the above-mentioned embodiment.

The base film 5b is placed in front of the reflective screen 5, and a lenticular lens 51B for vertical diffusion is formed on the front surface of the base film 5b. An adhesive layer 51C using an ionizing radiation-curable resin as a binder is formed between the base film 5b, the reflective layer 52, and the light absorption layer 53, and the reflective screen 5 is integrated with the adhesive layer 51C. ing.

The material of the adhesive layer 51C is preferably one that has adhesive properties with the base film 5a, the reflective layer 52, and the light absorption layer 53, and is also light transparent, such as urethane acrylate type, epoxy type, etc. Examples include ionizing radiation-curable resins.

In this example, the base 51A and the lenticular lens 51B are formed separately on separate base films, but for example, a reflective layer may be formed on the entire surface of one base film to prevent this reflection. Lenticular lenses and light-absorbing bases may be alternately formed on the surface of the layer.

Next, a method of manufacturing the reflective screen 5 constructed as described above will be explained. Figure 11, Figure 12
11 is a block diagram showing each step of the method of the embodiment, and FIG. 12 is a diagram showing the second embodiment of the method of manufacturing a reflective screen according to the present invention. FIG.

The method for manufacturing the reflective screen 5 shown in FIG. 10 includes a base molding step 111 and a reflective layer forming step 11.
2, a light absorption layer forming step 113, a lenticular lens molding step 114, and an adhesion step 115.

The base molding step 111 is a step of molding a base 51A using an ionizing radiation-curable resin on one side of the base film 5a transparent to ionizing radiation. In the reflective layer forming step 112, the base 51A and the base 51A
In this step, a reflective layer 52 is formed on the entire surface of the base film 5a on the side where the reflective layer 52 is formed. In this way, since the reflective layer 52 can be easily formed, the reflective screen 5 can be manufactured in a short time. The light absorption layer forming step 113 is a step of forming the light absorption layer 53 on the slope of the base 51A on the surface of the reflective layer 52. The lenticular lens molding step 114 is a step of molding the lenticular lens 51B on one surface of the base film 5b using an ionizing radiation curable resin. The bonding step 115 is a step of bonding and integrating the other surface of the base film 5b, the base 51A, the reflective layer 52, and the light absorption layer 53 with the adhesive layer 51C.

The method for manufacturing the reflective screen 5 constructed as described above will be explained in more detail with reference to FIG. 12 along with a manufacturing example. In this example, the screen size is 70
The case of manufacturing an inch reflective screen will be explained.

[0048] The base film 5a has a thickness of 0.2 mm.
Insert the PET film from the impression cylinder 92a side, and
The UV curable resin 51a is supplied through a forming roll 91A in which a 1A (triangular height 0.1 mm, apex angle 45°, base length 1.5 mm) mold is formed, and a UV lamp 93a is supplied.
The base 51A is molded by irradiating UV rays to harden the UV curable resin 51a (base molding step 111).

After the base 51A is released from the mold by the release roll 95, the base film 5a,
The reflective layer 52 is formed by offset printing an ink containing aluminum on the entire surface of the base 51A (reflective layer forming step 112).

Thereafter, black ink is screen printed on the slope of the base 51A among the surfaces of the reflective layer 52 using the printing roll 97 to form the light absorbing layer 53 (light absorbing layer forming step 113).

[0051] The base film 5b has a thickness of 0.05 m.
m of PET film is inserted from the impression cylinder 92b side, and UV curable resin 51b is supplied to a forming roll 91B on which a mold of a lenticular lens (pitch 0.2 mm) is formed.
UV rays are irradiated from the UV lamp 93b, and the UV curable resin 5 is
1b is cured to form a lenticular lens 51B (lenticular lens forming step 114). In addition, 94
is a light-shielding roll for blocking unnecessary UV rays.

Finally, after supplying the UV curable resin 51c between the base films 5a and 5b, both films are inserted into the adhesive roll 98, and the impression cylinder 92C and UV lamp 93c
The adhesive is pressed and cured to be integrated (bonding step 115), and then released from the mold using a release roll 99.

12 to 16 are diagrams schematically showing a part of other embodiments of the reflective screen according to the present invention, in which FIGS. 13 and 15 are plan views, and FIGS. 1
6 is a sectional view. Note that descriptions of parts that perform the same functions as those in the embodiment described above will be omitted, and only the different parts will be described.

Reflective screen 6 in the example of FIGS. 13 and 14
In this case, one reflective layer 61 corresponds to one condenser lens 63. The reflective layer 61 is formed by being divided in the horizontal direction, and as shown in FIG. 13, the entire reflective layer 61 is curved so that the image light 2 is diffused in the vertical direction.

The light absorption layer 62 is formed in a so-called matrix shape at the rear part of the screen other than the reflection layer 61. Therefore, contrast can be significantly improved. The condensing lens 63 is spherical and is configured to diffuse the reflected image light 2 in horizontal and vertical directions.

In the examples shown in FIGS. 15 and 16, the light absorption layer 72 is formed so that the portion that protrudes beyond the reflection layer 71 is parallel to the vertical direction (vertical direction of the screen). Since the light absorption layer 72 is formed in this manner, a high-contrast image can be observed even in a place where outside light easily enters from the side of the screen, such as near a window.

17 to 19 are diagrams schematically showing a part of still another embodiment of the reflective screen according to the present invention, with FIG. 17 being a perspective view, and FIGS. 18 and 19
is a sectional view.

In this embodiment, reflective screen 120
On the front side, a lenticular lens 123 is arranged so that many traveling lines (axis of the cylindrical lens) are parallel to the horizontal direction, and on the convex part on the rear side, as a light reflecting layer 121,
It is formed by arranging concave mirrors in a matrix.

The light absorption layer 122 is a reflective screen 12.
By applying black ink etc. to the entire rear side of 0,
It is formed in a portion other than the light reflective layer 121.

FIGS. 20 to 22 are diagrams schematically showing still another embodiment of the reflective screen according to the present invention, with FIG. 20 being a sectional view and FIG. 21 being a cross-sectional view of this embodiment. FIG. 22 is a diagram illustrating the preferable positional relationship between the lenticular lens and the reflective layer.

In this embodiment, two protruding light absorbing layers 22 are formed between the reflective layers 21. Since the light absorption layer 22 is formed in this manner, it is possible to observe images with particularly high contrast. Generally, external light causes some reflection on the light absorption layer and becomes secondary stray light, and this light also reduces the contrast, but since two light absorption layers 22 are formed in succession, as shown in FIG. Then, the secondary stray light 3a repeats multiple reflections between the light absorption layers 22 and becomes 2
This is to trap stray light and to increase the area of the light absorption layer 22.

Here, the amount of protrusion T of the light absorption layer 22 is preferably T≦2/3t, and more preferably about 1/2t, where t is the total screen thickness. This is because the larger the amount of protrusion of the light absorption layer 22, the more the proportion of external light entering the reflection layer 21 decreases, and the contrast improvement effect becomes more pronounced, but conversely, the vertical diffusion viewing angle becomes narrower. . On the other hand, the width W of the light absorption layer 22 is preferably in the range of 0.1w to 0.9w, where W is the pitch.

The shape of the reflective layer 21 is a concave mirror (vertical cylinder).
The shape can diffuse light in a direction that widens the horizontal viewing angle, and the fly's-eye shape can widen both horizontal and vertical viewing angles. Considering how a screen is generally used, it is sufficient for the horizontal viewing angle to be approximately ±40° at half maximum angle, and for the vertical viewing angle to be approximately ±10° at half maximum angle.

The vertical diffusivity and the horizontal diffusivity can be arbitrarily set depending on the shape of the lenticular lens on the front surface and the shape of the light diffusing and reflecting surface. If the R of the vertical concave surface of the diffuse reflection surface is made small, the horizontal diffusivity becomes wide, and if the R of the incident horizontal lenticular lens on the observation side is made small, the vertical diffusivity becomes wide. However, if the vertical directivity is increased, the light will be caught by the wedge-shaped light absorption layer 22, so it is desirable to widen the vertical directivity to about ±20°.

Furthermore, since the image light 2 from the light source spreads around the center as shown in FIG. 22, by shifting the positions of the lenticular lens 13 on the front and the reflective layer 21 on the back as shown in FIG. The reflective layer 21 appropriately reflects the image light of
can lead to.

The embodiment of the present invention shown in FIGS. 20 to 22 has been described above, and a specific manufacturing example will be described below.

The observation-side lenticular lens mold is made of hard copper by spindle processing to form a light-incoming lenticular lens, R=0.80 mm, pitch 0.8 mm, width 14 mm.
One with a size of 30 mm and a height of 1080 mm was produced.

The reflective layer 21 is also made of hard copper and has a triangular prism shape with a reflective layer width of 0.4 mm, a light absorption layer width W = 0.4 mm, and a protrusion amount T = 1 mm. The size was 0.80 mm, the same as the lenticular lens mold, and the reflective layer was made matte by blasting. The above two molds were set so that the lenticular lens position at the center was shifted by 40 mm, and the position of the reflective surface was shifted outward toward both sides.

Furthermore, at this time, a PVC tube (with a thickness of 2.8 mm is used and crushed to 2 mm) between the two molds.
0.05% AIBN as an initiator.
MMA syrup containing (2% alumina powder as a dispersing agent)
) was poured into the mold, and the mixture was heated and polymerized in an oven at 75°C to form a mold.

Next, after masking the reflective layer 21, a thermosetting resin (epoxy, acrylic resin, etc.) mixed with a light shielding agent (carbon, etc.) was applied to the light absorbing layer portion, and then cured. Next, the masking was removed and an aluminum vapor-deposited film was provided to create a reflective screen (this screen will be referred to as Production Example 1).

Further, after coating and curing the light shielding agent, the pitch is 0.
Ionizing radiation curing resin was applied to a mold of 8 mm and 0.5 mmR, and the cylinder of the observation side lenticular lens was 90 mm.
After stacking in different directions and curing with ionizing radiation, a reflective screen was created by providing an aluminum vapor-deposited film in the same manner as in Production Example 1.
).

The screen of Production Example 1 had a horizontal viewing angle of ±2
With a vertical viewing angle of 0° (half-value angle) and ±20°, the screen had high brightness from the front and had a high contrast that could be used even in bright rooms. In addition, the screen of Production Example 2 has a horizontal viewing angle of ±40° (half-value angle) and a vertical viewing angle of ±20°.
The screen had a wide viewing angle and a high contrast that could be used even in bright rooms.

FIG. 23 is a perspective view schematically showing a part of still another embodiment of the reflective screen according to the present invention. The reflective screen 9 of this embodiment has the same basic configuration as the example shown in FIG. 10, but the reflective layer 31 is formed by offset printing, for example, ink containing aluminum on a semi-cylindrical convex portion. , which improves horizontal light diffusion.

24 and 25 are diagrams showing an embodiment of the method for manufacturing a reflective screen according to the present invention shown in FIG. 23, and FIG. 24 is a block diagram showing each step of the method of the embodiment. , FIG. 25 is a schematic diagram showing an apparatus used in the method of the same example.

The manufacturing method of the reflective screen 9 shown in FIG. 24 includes a reflective layer base forming step 211, a lenticular lens forming step 212, a light transmitting portion forming step 213, an adhesion step 214, and a reflective layer printing step 215. It is composed of.

In the reflective layer base forming step 211, a semi-cylindrical reflective layer base 31a is formed using an ionizing radiation curing resin on one side of the base film 9a transparent to ionizing radiation.
This is the process of forming. The lenticular lens forming step 212 is a step of molding the lenticular lens 33B on one surface of the base film 9b using an ionizing radiation curable resin. The light transmitting portion forming step 213 is a step of forming a trapezoidal light transmitting portion 33A on the other surface of the base film 9b using an ionizing radiation curable resin at a position corresponding to the lenticular lens 33B. The bonding step 214 is a step of bonding and integrating the surface of the base film 9a on which the reflective layer 31 is not formed and the surface of the base film 9b on which the light transmitting portion 33A is formed via the light absorption layer 32. It is.

The light absorption layer 32 may be made of a colored ionizing radiation curable resin. Further, the direction in which the base films 9a and 9b are bonded is such that the running line of the lenticular lens 33B and the running line of the reflective layer 31 are perpendicular to each other.

In the bonding step 212, the lenticular lens 51B and the light absorption layer 53 are aligned (for example, the troughs of the lenticular lens 51B and the top of the light absorption layer 53 are The advantage is that there is no need to do The reflective layer printing step 215 is a step of printing ink containing a metal such as aluminum or vapor depositing a metal on the convex surface of the previously formed reflective layer base 31.

Next, the manufacturing method will be explained in more detail with reference to FIG. The base film 9b is inserted through the impression cylinder 132b, and the UV curable resin 54b is supplied to the molding roll 131B on which the lenticular lens mold is formed.
UV rays are irradiated from the V lamp 133b, and the UV curable resin 5 is
4b to form a lenticular lens 33B (lenticular lens forming step 212).

This base film 9b is passed through a molding roll 131c in which a concave mold is formed to form a trapezoidal light transmitting portion 33A, and UV curable resin 54c is supplied.
The UV curable resin 54c is cured by the lamp 133c to form a trapezoidal light transmitting portion 33A (light transmitting portion forming step 213).

The base film 9b is inserted from the impression cylinder 132a, and the U is placed on the forming roll 131a on which the mold of the reflective layer is formed.
The V-curable resin 54a is supplied, and the UV-curable resin 54a is cured by the UV lamp 133a to form a semi-cylindrical reflective layer base 31a (reflective layer base forming step 211
).

Next, a colored UV curable resin 54d is supplied between the base films 9a and 9b, and after both films are inserted into adhesive rolls 134a and 134b and pressed, they are cured and integrated by a UV lamp 133c ( Adhesion step 214).

Finally, the reflective layer 31 is formed by offset printing an ink containing, for example, aluminum on the convex surface of the reflective layer base 31a using the printing roll 135 (reflective layer forming step 215).

In this example, it is sufficient that the light transmitting portion is formed on the back surface where the lenticular lens is formed, and if this point is satisfied, the order of the steps in FIG. 23 is changed (for example, the It is permissible for the layer printing step 215 to occur after the reflective layer base forming step.

Next, still another embodiment of the reflective screen according to the present invention will be described with reference to FIGS. 26 to 28. FIG. 26 is a perspective view schematically showing a part of this embodiment, FIG. 27 is a block diagram showing the steps of the reflective screen manufacturing method of FIG. 26, and FIG. FIG. 2 is a schematic diagram showing an apparatus used in the manufacturing method.

The reflective screen of the embodiment shown in FIG. 26 is basically the same as the reflective screen of the embodiment shown in FIG. 23, except that a light absorption layer 35b is provided. By providing the light absorption layer 35b in this way, FIG.
The ability to absorb external light in the horizontal direction, which was insufficient in the previous example, has been improved.

The manufacturing process shown in FIG. 27 is also basically similar to that shown in FIG.
The manufacturing process is the same as that shown in 4 (manufacturing process of the reflective screen of the embodiment in FIG. 23), and the reflective layer base forming step 3
The only difference is that a light transmitting portion forming step 312 is added after step 11.

This light transmitting portion forming step 312 is a step for finally providing the light absorbing layer 35b. That is, in the light transmitting portion forming step 312, a light transmitting portion 36c is formed excluding a space for providing the light absorbing layer 35b. Thereafter, in the adhesion step 315, in the same manner as explained in FIG.
is formed. Note that the other steps are the same as those in FIG. 23, so their explanation will be omitted.

Next, the manufacturing method will be explained in more detail with reference to FIG. The base film 10b is inserted through the impression cylinder 142b, and the UV curable resin 55c is supplied to the molding roll 141c on which the lenticular lens mold is formed.
UV rays are irradiated from the V lamp 143c, and the UV curable resin 5 is
5c to form a lenticular lens 36B (lenticular lens forming step 313).

This base film 10b is passed through a forming roll 141D in which a concave mold is formed to form a trapezoidal light transmitting portion 36A, and the UV curable resin 55d is cured.
A trapezoidal light transmitting portion 36A is formed (light transmitting portion forming step 314).

On the other hand, the base film 10a is placed on the impression cylinder 142.
The UV curable resin 55a is inserted into the forming roll 141A having a mold for the reflective layer base formed thereon to form a semi-cylindrical reflective layer base 34a (reflective layer base forming step 311).

This base film 10a is passed through a forming roll 141B in which a concave mold is formed to form a light transmitting portion 36c having a rectangular cross section, and a UV curable resin 55b is supplied and cured by a UV lamp 143b to form a rectangular shape. A light transmitting portion 36c is formed (light transmitting portion forming step 312).

Next, base films 10a and 10
A colored UV curable resin 55e is supplied during the period b, and both films are inserted into adhesive rolls 144a and 144b and pressed, and then cured and integrated by a UV lamp 143e (
Adhesion step 315).

Finally, a reflective layer is formed by offset printing an ink containing, for example, aluminum on the convex surface of the reflective layer base 34a using the printing roll 145 (reflective layer forming step 316).

[0095]

As described above in detail, according to claim 1, since the reflective screen is provided with a light absorbing portion, it is possible to observe a high contrast image with reduced reflection of external light.

According to claim 2, the lens section is provided in the front part of the screen, and the image light enters the reflecting section, and the external light enters the light absorbing section, so that an image with even higher contrast can be observed. can do.

According to claim 3, since the reflecting section is provided with both or one of a convex mirror and a concave mirror, the image light can be diffused and reflected. Therefore, by combining the lens section with a convex mirror and a concave mirror, it is possible to control the vertical and horizontal diffusion of the image light, making it possible to easily design the screen and obtain the necessary viewing angle.

According to claim 4, since the light absorbing portion is made to protrude beyond the reflecting portion, reflection of external light, particularly reflection of external light that enters from diagonally above or from the side, can be significantly suppressed.

According to claims 5 and 6, since a film is used as the base material of the screen, the mechanical strength can be improved even if the screen is made thin.

According to claims 7 and 8, it is possible to continuously produce a reflective screen using a film as a base material.

According to claim 9, it is possible to continuously produce a reflective screen using a film as a base material without particularly considering the alignment of two films to be adhered.

[Brief explanation of the drawing]

FIG. 1 shows a first view of a reflective screen according to the invention.
FIG. 2 is a cross-sectional view schematically showing a part of the embodiment.

FIG. 2 shows a first view of a reflective screen according to the invention.
FIG. 2 is a plan view schematically showing a part of the embodiment.

FIG. 3 is a plan view showing a reflecting section constituting the screen of the first embodiment.

FIG. 4 shows a first reflective screen according to the present invention.
FIG. 2 is a cross-sectional view schematically showing a part of the embodiment.

FIG. 5 shows a first reflective screen according to the present invention.
FIG. 2 is a cross-sectional view schematically showing a part of the embodiment.

FIG. 6 shows a second reflective screen according to the invention.
FIG. 2 is a perspective view schematically showing a part of the embodiment.

FIG. 7 shows a second reflective screen according to the present invention.
FIG. 2 is a cross-sectional view schematically showing a part of the embodiment.

FIG. 8 is a block diagram showing each step of the first embodiment of the method for manufacturing a reflective screen according to the present invention.

FIG. 9 is a schematic diagram showing an apparatus used in a first embodiment of the method for manufacturing a reflective screen according to the present invention.

FIG. 10 is a sectional view schematically showing a portion of a third embodiment of a reflective screen according to the present invention.

FIG. 11 is a block diagram showing each step of a second embodiment of the method for manufacturing a reflective screen according to the present invention.

FIG. 12 is a schematic diagram showing an apparatus used in a second embodiment of the method for manufacturing a reflective screen according to the present invention.

FIG. 13 is a plan view schematically showing a part of another embodiment of the reflective screen according to the present invention.

FIG. 14 is a sectional view schematically showing a part of another embodiment of the reflective screen according to the present invention.

FIG. 15 is a plan view schematically showing a part of another embodiment of the reflective screen according to the present invention.

FIG. 16 is a sectional view schematically showing a part of another embodiment of the reflective screen according to the present invention.

FIG. 17 is a perspective view schematically showing a part of still another embodiment of the reflective screen according to the present invention.

FIG. 18 is a sectional view schematically showing a part of still another embodiment of the reflective screen according to the present invention.

FIG. 19 is a sectional view schematically showing a part of still another embodiment of the reflective screen according to the present invention.

FIG. 20 is a sectional view schematically showing a part of another embodiment of the reflective screen according to the present invention.

FIG. 21 is a diagram showing the effect of another embodiment of the reflective screen according to the present invention.

FIG. 22 is a diagram showing a preferred positional relationship of lenticular lenses in another embodiment of the reflective screen according to the present invention.

FIG. 23 is a perspective view schematically showing a part of still another embodiment of the reflective screen according to the present invention.

FIG. 24 is a block diagram showing each step of an embodiment of a method for manufacturing a reflective screen according to the present invention.

FIG. 25 is a schematic diagram showing an apparatus used in an embodiment of the method for manufacturing a reflective screen according to the present invention.

FIG. 26 is a perspective view schematically showing a part of still another embodiment of the reflective screen according to the present invention.

FIG. 27 is a block diagram showing steps of another embodiment of the method for manufacturing a reflective screen according to the present invention.

FIG. 28 is a schematic diagram showing an apparatus used in another embodiment of the method for manufacturing a reflective screen according to the present invention.

[Explanation of symbols]

1, 4, 5, 6, 7, 8, 9, 10 Reflective screen 11, 21, 31, 34, 41, 52, 61, 71
Reflective layer 12, 22, 32, 35a, 35b Light absorption layer 33A
, 36A, 36C, Light transmitting portions 43A, 51A Convex portions 13, 43B, 51B, 33B, 36B Lenticular lens 2 Image light 3 External light 63, 73 Condensing lens

Claims (9)

[Claims] 1. A reflective screen for viewing by reflecting image light projected from the front by a reflective part, comprising: a reflective part provided continuously or divided into strips; and a reflective part provided in a part other than the reflective part. A reflective screen characterized by comprising a light absorption part that absorbs external light. 2. A lens section is provided in front of the reflecting section and the light absorbing section to allow image light to enter the reflecting section and external light to enter the light absorbing section.
Reflective screen as described. 3. The reflecting section is configured to diffuse and reflect the image light by arranging one or more of a convex mirror and/or a concave mirror. reflective screen. 4. The reflective screen according to claim 1, wherein the light absorbing section is configured to protrude beyond the reflecting section. 5. A light-transmissive base film, a light-transparent convex portion provided on one surface of the base film, and a reflector provided on the top surface of the convex portion for reflecting image light. a light absorbing portion provided on a surface of at least the convex portion other than the reflecting portion and absorbing external light;
and a lens section provided on the other surface of the base film to allow image light to enter the reflecting section and external light to enter the light absorbing section. 6. A light-transmissive first base film, a plurality of parallel convex bases provided at intervals on one side of the first base film, and a base film provided between the bases that reflects image light. a light-absorbing part provided on the surface of the base to absorb external light; a light-transmissive second base film; and a light-transmitting part provided on one surface of the second base film to absorb the image light. A lens part that allows light to enter the reflective part and external light to enter the light absorbing part, and a lens part that is provided between the other surface of the second base film and the reflective part and the light absorbing part and adheres them. A reflective screen characterized by comprising an adhesive part that is integrated with the reflective screen. 7. A lens part forming step in which one surface of a base film transparent to ionizing radiation is filled with an ionizing radiation-curable resin and cured to form a lens part; and the other surface of the base film is transparent to ionizing radiation. a convex part forming step of filling and curing a curable resin to form a convex part; a reflective part forming step of forming a reflective part on the surface of the convex part; and a surface of at least other than the reflective part of the convex part. 1. A method for manufacturing a reflective screen, comprising: a step of forming a light absorbing portion; 8. A base forming step of filling one side of a first base film transparent to ionizing radiation with an ionizing radiation curable resin and curing it to form a plurality of parallel convex bases spaced apart; a reflective part forming step of forming a reflective part on the surface of the base; a light absorbing part forming step of forming a light absorbing part on the surface of the base; and a light absorbing part forming step of forming a light absorbing part on the surface of the base; a lens part molding process of filling and curing resin to mold the lens part;
an adhesion step of filling and curing an ionizing radiation curable resin between the other surface of the second base film and the reflecting section and the light absorbing section to bond them together. A method of manufacturing the reflective screen configured. 9. A reflective layer base forming step of filling one side of the first base film transparent to ionizing radiation with an ionizing radiation curable resin and curing it to form a plurality of parallel convex reflective layer bases spaced apart; A lens part forming step in which one surface of a second base film transparent to ionizing radiation is filled with an ionizing radiation curable resin and cured to form a lens part; a light transmitting part forming step of filling and curing a radiation curable resin to form a plurality of convex light transmitting parts in parallel at intervals; and light transmitting between the other surface of the first base film and the second base film. an adhesion step in which these are bonded and integrated by filling and curing an ionizing radiation-curable resin having light-absorbing properties between the surface having the reflective layer base and the convex surface of the reflective layer base; and printing a reflective layer on the convex surface of the reflective layer base. A method for manufacturing a reflective screen, comprising: a reflective layer printing step.